| Share | Phrase |
|---|
| 15.43% | paired [structure] valve |
| 13.43% | paired [structure] nozzle |
| 11.38% | paired [structure] shoe |
| 9.90% | paired [structure] port |
| 9.48% | paired [structure] led |
| 6.03% | paired [structure] cylinder |
| 5.76% | paired [structure] transistor |
| 5.69% | paired [structure] gear |
| 4.94% | paired [structure] anode |
| 4.94% | paired [structure] arm |
| 4.94% | paired [structure] burner |
| 4.52% | paired [structure] wheel |
| 3.49% | paired [structure] assembly |